This would be best for a vintage mini bike restoration. Late 50's very early 60's I'm guessing. Has recoil beginning and a kill activate the shroud. Runs wonderful! Can't find the air cleaner. It took some digging but I finally came up with a specification that it is a 6hp Mod # 143330 Type # 502836 Serial # 308012 1 inch output shaft with notch for key. $120.00 obo.